Can't compile my C++ ros_nxt publisher

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I'm new in programming, so i'm trying to make my own publisher to the topic wich controls the motors of my NXT, so here is the code that i have written.I'm not sure if it is the correct thing that i need to control the motors, but i can't compile it.

#include <nxt_msgs/JointCommand.h>
#include <ros/ros.h>

           template<class M> ros::Publisher ros::NodeHandle::advertise(const     nxt_msgs::JointCommand, uint32_t, bool)

        int main(int argc, char **argv)

    {
        ros::init(argc, argv, "JointCommand");

        ros::NodeHandle n;
        ros::Publisher pub = n.advertise<nxt_msgs::>("JointCommand", 1);
        ros::Rate loop_rate(10);

        int test=1;
        nxt_msgs::JointCommand c;
        c = nxt_msgs::JointCommand();
        test = c.effort;

        pub.publish(c);

        ros::spinOnce();
        loop_rate.sleep();

        return 0;
    }

when i try to make my package it gives me the following error :

/ros_workspace/NXT/src/rc.cpp:6:1: error: expected initializer before ‘int’